You have the license activated on the http://ma.mspnew.com/ website, which doesn’t seem to exist anymore.
If you login in the https://www.silkypress.com/login/, you can manage the websites on which you have the license activated. First you have to deactivate the license on the ma.mspnew.com website in order to activate it on the new website.
Once you activate the license on the new website, you’ll be able to make an update.
After I’m logged on https://www.silkypress.com/login/ there’s just an blanc website !
I dilated it, then installed the new version and now it’s not possible to activate the License Key !
I removed the ma.mspnew.com website from the websites on which the license is active.
Please try again to active the license key. Afterwards the update should work.